Boiler Components Functions Flashcards
Oil Storage Tank
Where fuel oil is stored
Tank Shut Off Valve
Permits the operator to control the flow of oil to clean strainer and perform other maintenance
Oil Strainer
Separates dirt and sediment from fuel oil coming from oil storage tank
Vacuum Gauge
Vacuum gauge readings indicate to the operator whether there is an obstruction in the suction line
Oil Preheater
heats fuel oil to a desired temperature before combusted
Main Fuel Valve
An electrically operated valve that will open or close the line leading to the atomizer of the oil burner. The burner shut off valve is located as close as possible to the burner to reduce the amount of oil remaining in the burner line after an emergency shutdown
Atomizing Cup (or Spinner)
breaks up (atomizes) the fuel oil for proper combustion
Vaporstat
A low pressure, pressure control mounted on a fan housing and will shutdown if the following happens
If an oil burner that has no air for combustion exists a dangerous condition occurs when the oil is being pumped to the combustion chamber and not being atomized properly which could lead to an explosion
Ignition
The mixture oof fuel oil is ingested at first by a gas pilot or by electric ignition, combustion is maintained by retained heat in the combustion chamber
Photoelectric Cell
The photoelectric cell is a flame detection control. It is a device that will shut down an oil burner if a flame is not visible to the scanner or photoelectric cell. A dangerous condition will arise if oil is being pumped into the combustion chamber, but not burning. The atomized unburned fuel could cause an explosion if a spark or other source of ignition occurs
Aquastat
Operates the oil burner in the summer for domestic hot water needs
Low Water Cutoff
An automatic electric control that will shut the burner when the water level is below a safe operating point
Stack Switch
The stack switch (or primary control) is the main combustion controller. It will stop the oil burner and lock it out on safety in case of ignition failure or loss of flame in combustion chamber. The stack switch operates when there is no heat in the smoke stack. If oil is being atomized and vaporized in the combustion chamber but no flame exists, a spark could cause an explosion
Pressuretrol
a control used to control a steam boiler, by setting when the boiler should begin and end firing based on steam pressure
